Camera that engages in a focusing operation through a contrast method
US7158182B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 26, 2002 |
| Grant date | Jan 2, 2007 |
| Priority date | — |
| Expiry date | Nov 23, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N23/673
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A camera includes: an image-capturing element that captures a subject image through a photographic lens having a focusing lens; an evaluation value calculation unit that calculates focus evaluation values at a plurality of lens positions assumed by the focusing lens based upon an image-capturing signal output by the image-capturing element; a weighting unit that weights the focus evaluation values calculated by the evaluation value calculation unit in correspondence to the lens positions of the focusing lens assumed when the focus evaluation values are calculated respectively; and a focusing operation unit that performs a focusing operation for the photographic lens based upon the weighted focus evaluation values.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.